n: 40 m: 401 packed: 13 density: 0 nodes: 0 solveTime: 4560 buildTime: 90 solved: true
{0,7,16}
{1,8,25}
{2,3,9}
{4,6,28}
{5,23,36}
{10,17,35}
{11,18,33}
{12,14,29}
{13,19,20}
{21,26,39}
{22,24,27}
{30,34,37}
{31,32,38}